iOS Camera Customization: How to implement Grid Lines?

Question

I am able to use the flash feature, access the photo gallery, and use the rear/front camera.

I would like to implement grid lines that display when the user is taking a photo.

Any ideas?

Answer 1

Create a UIImageView to use for the cameraOverlayView.

Assuming you've got a UIImagePickerController named yourImagePickerController and also that you've got an image file named overlay.png as your 'grid lines'. When making your grid line image file, be sure to use a transparent background - not opaque white.

UIImageView *overlayImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"overlay.png"]];

CGRect overlayRect = CGRectMake(0, 0, overlayImage.image.size.width, overlayImage.image.size.height);

[overlayImage setFrame:overlayRect];

[yourImagePickerController setCameraOverlayView:overlayImage];